| /*************************************************************************** |
| * __________ __ ___. |
| * Open \______ \ ____ ____ | | _\_ |__ _______ ___ |
| * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ / |
| * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < < |
| * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \ |
| * \/ \/ \/ \/ \/ |
| * $Id$ |
| * |
| * Copyright (C) 2005 Miika Pekkarinen |
| * |
| * All files in this archive are subject to the GNU General Public License. |
| * See the file COPYING in the source tree root for full license agreement. |
| * |
| * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY |
| * KIND, either express or implied. |
| * |
| ****************************************************************************/ |
| #include <stdio.h> |
| #include <string.h> |
| #include <stdlib.h> |
| #include <ctype.h> |
| |
| #include "system.h" |
| #include "thread.h" |
| #include "file.h" |
| #include "lcd.h" |
| #include "font.h" |
| #include "backlight.h" |
| #include "button.h" |
| #include "kernel.h" |
| #include "tree.h" |
| #include "debug.h" |
| #include "sprintf.h" |
| #include "settings.h" |
| #include "plugin.h" |
| #include "wps.h" |
| #include "wps-display.h" |
| #include "audio.h" |
| #include "logf.h" |
| #include "mp3_playback.h" |
| #include "mp3data.h" |
| #include "usb.h" |
| #include "status.h" |
| #include "main_menu.h" |
| #include "ata.h" |
| #include "screens.h" |
| #include "playlist.h" |
| #include "playback.h" |
| #include "pcm_playback.h" |
| #include "buffer.h" |
| #ifdef HAVE_LCD_BITMAP |
| #include "icons.h" |
| #include "peakmeter.h" |
| #include "action.h" |
| #endif |
| #include "lang.h" |
| #include "bookmark.h" |
| #include "misc.h" |
| #include "sound.h" |
| |
| static volatile bool playing; |
| static volatile bool paused; |
| |
| #define CODEC_VORBIS "/.rockbox/codecs/codecvorbis.rock"; |
| #define CODEC_MPA_L3 "/.rockbox/codecs/codecmpa.rock"; |
| #define CODEC_FLAC "/.rockbox/codecs/codecflac.rock"; |
| #define CODEC_WAV "/.rockbox/codecs/codecwav.rock"; |
| #define CODEC_A52 "/.rockbox/codecs/codeca52.rock"; |
| #define CODEC_MPC "/.rockbox/codecs/codecmpc.rock"; |
| |
| #define AUDIO_DEFAULT_WATERMARK (1024*256) |
| #define AUDIO_DEFAULT_FILECHUNK (1024*32) |
| |
| #define AUDIO_PLAY 1 |
| #define AUDIO_STOP 2 |
| #define AUDIO_PAUSE 3 |
| #define AUDIO_RESUME 4 |
| #define AUDIO_NEXT 5 |
| #define AUDIO_PREV 6 |
| #define AUDIO_FF_REWIND 7 |
| #define AUDIO_FLUSH_RELOAD 8 |
| #define AUDIO_CODEC_DONE 9 |
| |
| #define CODEC_LOAD 1 |
| #define CODEC_LOAD_DISK 2 |
| |
| /* As defined in plugins/lib/xxx2wav.h */ |
| #define MALLOC_BUFSIZE (512*1024) |
| #define GUARD_BUFSIZE (8*1024) |
| |
| /* TODO: |
| Handle playlist_peek in mpeg.c |
| Track changing |
| */ |
| |
| extern bool audio_is_initialized; |
| |
| /* Buffer control thread. */ |
| static struct event_queue audio_queue; |
| static long audio_stack[(DEFAULT_STACK_SIZE + 0x1000)/sizeof(long)]; |
| static const char audio_thread_name[] = "audio"; |
| |
| /* Codec thread. */ |
| static struct event_queue codec_queue; |
| static long codec_stack[(DEFAULT_STACK_SIZE + 0x2500)/sizeof(long)] __attribute__ ((section(".idata"))); |
| static const char codec_thread_name[] = "codec"; |
| |
| /* Is file buffer currently being refilled? */ |
| static volatile bool filling; |
| |
| /* Ring buffer where tracks and codecs are loaded. */ |
| char *codecbuf; |
| |
| /* Total size of the ring buffer. */ |
| int codecbuflen; |
| |
| /* Bytes available in the buffer. */ |
| static volatile int codecbufused; |
| |
| /* Ring buffer read and write indexes. */ |
| static volatile int buf_ridx; |
| static volatile int buf_widx; |
| |
| #define MAX_TRACK 10 |
| struct track_info { |
| struct mp3entry id3; |
| struct mp3info mp3data; |
| char *codecbuf; |
| size_t codecsize; |
| int codectype; |
| |
| volatile char *filebuf; |
| off_t filerem; |
| off_t filesize; |
| off_t filepos; |
| volatile int available; |
| bool taginfo_ready; |
| int playlist_offset; |
| }; |
| |
| /* Track information (count in file buffer, read/write indexes for |
| track ring structure. */ |
| static int track_count; |
| static volatile int track_ridx; |
| static volatile int track_widx; |
| static bool track_changed; |
| |
| /* Partially loaded song's file handle to continue buffering later. */ |
| static int current_fd; |
| |
| /* Information about how many bytes left on the buffer re-fill run. */ |
| static size_t fill_bytesleft; |
| |
| /* Track info structure about songs in the file buffer. */ |
| static struct track_info tracks[MAX_TRACK]; |
| |
| /* Pointer to track info structure about current song playing. */ |
| static volatile struct track_info *cur_ti; |
| |
| /* Codec API including function callbacks. */ |
| static struct codec_api ci; |
| |
| /* When we change a song and buffer is not in filling state, this |
| variable keeps information about whether to go a next/previous track. */ |
| static int new_track; |
| |
| /* Configuration */ |
| static int conf_bufferlimit; |
| static int conf_watermark; |
| static int conf_filechunk; |
| |
| static bool v1first = false; |
| |
| static void mp3_set_elapsed(struct mp3entry* id3); |
| int mp3_get_file_pos(void); |
| |
| #ifdef SIMULATOR |
| bool audiobuffer_insert_sim(char *buf, size_t length) |
| { |
| (void)buf; |
| (void)length; |
| |
| return true; |
| } |
| #endif |
| |
| void* get_codec_memory_callback(size_t *size) |
| { |
| *size = MALLOC_BUFSIZE; |
| return &audiobuf[0]; |
| } |
| |
| void codec_set_elapsed_callback(unsigned int value) |
| { |
| unsigned int latency; |
| |
| #ifndef SIMULATOR |
| latency = audiobuffer_get_latency(); |
| #else |
| latency = 0; |
| #endif |
| if (value < latency) { |
| cur_ti->id3.elapsed = 0; |
| } else if (value - latency > cur_ti->id3.elapsed |
| || value - latency < cur_ti->id3.elapsed - 2) { |
| cur_ti->id3.elapsed = value - latency; |
| } |
| } |
| |
| size_t codec_filebuf_callback(void *ptr, size_t size) |
| { |
| char *buf = (char *)ptr; |
| int copy_n; |
| int part_n; |
| |
| if (ci.stop_codec || !playing) |
| return 0; |
| |
| copy_n = MIN((off_t)size, (off_t)cur_ti->available + cur_ti->filerem); |
| |
| while (copy_n > cur_ti->available) { |
| yield(); |
| if (ci.stop_codec) |
| return 0; |
| } |
| |
| if (copy_n == 0) |
| return 0; |
| |
| part_n = MIN(copy_n, codecbuflen - buf_ridx); |
| memcpy(buf, &codecbuf[buf_ridx], part_n); |
| if (part_n < copy_n) { |
| memcpy(&buf[part_n], &codecbuf[0], copy_n - part_n); |
| } |
| |
| buf_ridx += copy_n; |
| if (buf_ridx >= codecbuflen) |
| buf_ridx -= codecbuflen; |
| ci.curpos += copy_n; |
| cur_ti->available -= copy_n; |
| codecbufused -= copy_n; |
| |
| return copy_n; |
| } |
| |
| void* codec_request_buffer_callback(size_t *realsize, size_t reqsize) |
| { |
| size_t part_n; |
| |
| if (ci.stop_codec || !playing) { |
| *realsize = 0; |
| return NULL; |
| } |
| |
| *realsize = MIN((off_t)reqsize, (off_t)cur_ti->available + cur_ti->filerem); |
| if (*realsize == 0) { |
| return NULL; |
| } |
| |
| while ((int)*realsize > cur_ti->available) { |
| yield(); |
| if (ci.stop_codec) { |
| *realsize = 0; |
| return NULL; |
| } |
| } |
| |
| part_n = MIN((int)*realsize, codecbuflen - buf_ridx); |
| if (part_n < *realsize) { |
| part_n += GUARD_BUFSIZE; |
| if (part_n < *realsize) |
| *realsize = part_n; |
| memcpy(&codecbuf[codecbuflen], &codecbuf[0], *realsize - |
| (codecbuflen - buf_ridx)); |
| } |
| |
| return (char *)&codecbuf[buf_ridx]; |
| } |
| |
| void codec_advance_buffer_callback(size_t amount) |
| { |
| if ((int)amount > cur_ti->available + cur_ti->filerem) |
| amount = cur_ti->available + cur_ti->filerem; |
| |
| if ((int)amount > cur_ti->available) { |
| codecbufused = 0; |
| buf_ridx = buf_widx; |
| cur_ti->available = 0; |
| while ((int)amount < cur_ti->available && !ci.stop_codec) |
| yield(); |
| } else { |
| cur_ti->available -= amount; |
| codecbufused -= amount; |
| buf_ridx += amount; |
| if (buf_ridx >= codecbuflen) |
| buf_ridx -= codecbuflen; |
| } |
| ci.curpos += amount; |
| cur_ti->id3.offset = ci.curpos; |
| } |
| |
| void codec_advance_buffer_loc_callback(void *ptr) |
| { |
| size_t amount; |
| |
| amount = (int)ptr - (int)&codecbuf[buf_ridx]; |
| codec_advance_buffer_callback(amount); |
| } |
| |
| off_t codec_mp3_get_filepos_callback(int newtime) |
| { |
| off_t newpos; |
| |
| cur_ti->id3.elapsed = newtime; |
| newpos = mp3_get_file_pos(); |
| |
| return newpos; |
| } |
| |
| bool codec_seek_buffer_callback(off_t newpos) |
| { |
| int difference; |
| |
| if (newpos < 0) |
| newpos = 0; |
| |
| if (newpos >= cur_ti->filesize) |
| newpos = cur_ti->filesize - 1; |
| |
| difference = newpos - ci.curpos; |
| if (difference >= 0) { |
| logf("seek: +%d", difference); |
| codec_advance_buffer_callback(difference); |
| #ifndef SIMULATOR |
| pcm_play_stop(); |
| #endif |
| return true; |
| } |
| |
| difference = -difference; |
| if (ci.curpos - difference < 0) |
| difference = ci.curpos; |
| |
| if (codecbufused + difference > codecbuflen) { |
| /* We need to reload the song. FIX THIS! */ |
| return false; |
| } |
| |
| logf("seek: -%d", difference); |
| codecbufused += difference; |
| cur_ti->available += difference; |
| buf_ridx -= difference; |
| if (buf_ridx < 0) |
| buf_ridx = codecbuflen + buf_ridx; |
| ci.curpos -= difference; |
| #ifndef SIMULATOR |
| pcm_play_stop(); |
| #endif |
| |
| return true; |
| } |
| |
| void codec_configure_callback(int setting, void *value) |
| { |
| switch (setting) { |
| case CODEC_SET_FILEBUF_WATERMARK: |
| conf_watermark = (unsigned int)value; |
| break; |
| |
| case CODEC_SET_FILEBUF_CHUNKSIZE: |
| conf_filechunk = (unsigned int)value; |
| break; |
| |
| case CODEC_SET_FILEBUF_LIMIT: |
| conf_bufferlimit = (unsigned int)value; |
| break; |
| |
| default: |
| logf("Illegal key: %d", setting); |
| } |
| } |
| |
| /* Simple file type probing by looking filename extension. */ |
| int probe_file_format(const char *filename) |
| { |
| char *suffix; |
| |
| suffix = strrchr(filename, '.'); |
| if (suffix == NULL) |
| return AFMT_UNKNOWN; |
| suffix += 1; |
| |
| if (!strcasecmp("mp1", suffix)) |
| return AFMT_MPA_L1; |
| else if (!strcasecmp("mp2", suffix)) |
| return AFMT_MPA_L2; |
| else if (!strcasecmp("mpa", suffix)) |
| return AFMT_MPA_L2; |
| else if (!strcasecmp("mp3", suffix)) |
| return AFMT_MPA_L3; |
| else if (!strcasecmp("ogg", suffix)) |
| return AFMT_OGG_VORBIS; |
| else if (!strcasecmp("wav", suffix)) |
| return AFMT_PCM_WAV; |
| else if (!strcasecmp("flac", suffix)) |
| return AFMT_FLAC; |
| else if (!strcasecmp("mpc", suffix)) |
| return AFMT_MPC; |
| else if (!strcasecmp("aac", suffix)) |
| return AFMT_AAC; |
| else if (!strcasecmp("ape", suffix)) |
| return AFMT_APE; |
| else if (!strcasecmp("wma", suffix)) |
| return AFMT_WMA; |
| else if ((!strcasecmp("a52", suffix)) || (!strcasecmp("ac3", suffix))) |
| return AFMT_A52; |
| else if (!strcasecmp("rm", suffix)) |
| return AFMT_REAL; |
| |
| return AFMT_UNKNOWN; |
| |
| } |
| |
| void yield_codecs(void) |
| { |
| yield(); |
| #ifndef SIMULATOR |
| if (!pcm_is_playing()) |
| sleep(5); |
| while (pcm_is_lowdata() && !ci.stop_codec && |
| playing && queue_empty(&audio_queue)) |
| yield(); |
| #endif |
| } |
| |
| void audio_fill_file_buffer(void) |
| { |
| size_t i; |
| int rc; |
| |
| logf("Filling buffer..."); |
| i = 0; |
| while ((off_t)i < tracks[track_widx].filerem) { |
| /* Give codecs some processing time. */ |
| yield_codecs(); |
| |
| if (!queue_empty(&audio_queue)) { |
| logf("Filling interrupted"); |
| close(current_fd); |
| current_fd = -1; |
| return ; |
| } |
| |
| if (fill_bytesleft < MIN((unsigned int)conf_filechunk, |
| tracks[track_widx].filerem - i)) |
| break ; |
| rc = MIN(conf_filechunk, codecbuflen - buf_widx); |
| rc = read(current_fd, &codecbuf[buf_widx], rc); |
| if (rc <= 0) { |
| tracks[track_widx].filerem = 0; |
| break ; |
| } |
| |
| buf_widx += rc; |
| if (buf_widx >= codecbuflen) |
| buf_widx -= codecbuflen; |
| i += rc; |
| tracks[track_widx].available += rc; |
| fill_bytesleft -= rc; |
| } |
| |
| tracks[track_widx].filerem -= i; |
| codecbufused += i; |
| tracks[track_widx].filepos += i; |
| logf("Done:%d", tracks[track_widx].available); |
| if (tracks[track_widx].filerem == 0) { |
| if (++track_widx == MAX_TRACK) |
| track_widx = 0; |
| tracks[track_widx].filerem = 0; |
| close(current_fd); |
| current_fd = -1; |
| } |
| } |
| |
| bool loadcodec(const char *trackname, bool start_play) |
| { |
| char msgbuf[80]; |
| off_t size; |
| int filetype; |
| int fd; |
| int i, rc; |
| const char *codec_path; |
| int copy_n; |
| int prev_track; |
| |
| filetype = probe_file_format(trackname); |
| switch (filetype) { |
| case AFMT_OGG_VORBIS: |
| logf("Codec: Vorbis"); |
| codec_path = CODEC_VORBIS; |
| break; |
| case AFMT_MPA_L2: |
| case AFMT_MPA_L3: |
| logf("Codec: MPA L2/L3"); |
| codec_path = CODEC_MPA_L3; |
| break; |
| case AFMT_PCM_WAV: |
| logf("Codec: PCM WAV"); |
| codec_path = CODEC_WAV; |
| break; |
| case AFMT_FLAC: |
| logf("Codec: FLAC"); |
| codec_path = CODEC_FLAC; |
| break; |
| case AFMT_A52: |
| logf("Codec: A52"); |
| codec_path = CODEC_A52; |
| break; |
| case AFMT_MPC: |
| logf("Codec: Musepack"); |
| codec_path = CODEC_MPC; |
| break; |
| default: |
| logf("Codec: Unsupported"); |
| snprintf(msgbuf, sizeof(msgbuf)-1, "No codec for: %s", trackname); |
| splash(HZ*2, true, msgbuf); |
| codec_path = NULL; |
| } |
| |
| tracks[track_widx].codectype = filetype; |
| tracks[track_widx].codecsize = 0; |
| if (codec_path == NULL) |
| return false; |
| |
| if (!start_play) { |
| prev_track = track_widx - 1; |
| if (prev_track < 0) |
| prev_track = MAX_TRACK-1; |
| if (track_count > 0 && filetype == tracks[prev_track].codectype) { |
| logf("Reusing prev. codec"); |
| return true; |
| } |
| } else { |
| /* Load the codec directly from disk and save some memory. */ |
| cur_ti = &tracks[track_widx]; |
| ci.filesize = cur_ti->filesize; |
| ci.id3 = (struct mp3entry *)&cur_ti->id3; |
| ci.mp3data = (struct mp3info *)&cur_ti->mp3data; |
| ci.taginfo_ready = (bool *)&cur_ti->taginfo_ready; |
| ci.curpos = 0; |
| playing = true; |
| logf("Starting codec"); |
| queue_post(&codec_queue, CODEC_LOAD_DISK, (void *)codec_path); |
| return true; |
| } |
| |
| fd = open(codec_path, O_RDONLY); |
| if (fd < 0) { |
| logf("Codec doesn't exist!"); |
| snprintf(msgbuf, sizeof(msgbuf)-1, "Couldn't load codec: %s", codec_path); |
| splash(HZ*2, true, msgbuf); |
| return false; |
| } |
| |
| size = filesize(fd); |
| if ((off_t)fill_bytesleft < size + conf_watermark) { |
| logf("Not enough space"); |
| close(fd); |
| return false; |
| } |
| |
| i = 0; |
| while (i < size) { |
| yield_codecs(); |
| if (!queue_empty(&audio_queue)) { |
| logf("Buffering interrupted"); |
| close(fd); |
| return false; |
| } |
| |
| copy_n = MIN(conf_filechunk, codecbuflen - buf_widx); |
| rc = read(fd, &codecbuf[buf_widx], copy_n); |
| if (rc < 0) |
| return false; |
| buf_widx += rc; |
| if (buf_widx >= codecbuflen) |
| buf_widx -= codecbuflen; |
| i += rc; |
| } |
| close(fd); |
| logf("Done: %dB", i); |
| |
| codecbufused += size; |
| fill_bytesleft -= size; |
| tracks[track_widx].codecsize = size; |
| |
| return true; |
| } |
| |
| bool audio_load_track(int offset, bool start_play, int peek_offset) |
| { |
| char *trackname; |
| int fd; |
| off_t size; |
| int rc, i; |
| int copy_n; |
| /* Used by the metadata parsers */ |
| unsigned long totalsamples,bytespersample,channels,bitspersample,numbytes; |
| unsigned char* buf; |
| int j,eof; |
| |
| if (track_count >= MAX_TRACK) |
| return false; |
| |
| trackname = playlist_peek(peek_offset); |
| if (!trackname) { |
| return false; |
| } |
| |
| fd = open(trackname, O_RDONLY); |
| if (fd < 0) |
| return false; |
| |
| size = filesize(fd); |
| tracks[track_widx].filerem = size; |
| tracks[track_widx].filesize = size; |
| tracks[track_widx].filepos = 0; |
| tracks[track_widx].available = 0; |
| tracks[track_widx].taginfo_ready = false; |
| tracks[track_widx].playlist_offset = offset; |
| |
| /* Load the codec */ |
| if (buf_widx >= codecbuflen) |
| buf_widx -= codecbuflen; |
| |
| /* Set default values */ |
| if (start_play) { |
| conf_bufferlimit = 0; |
| conf_watermark = AUDIO_DEFAULT_WATERMARK; |
| conf_filechunk = AUDIO_DEFAULT_FILECHUNK; |
| } |
| |
| tracks[track_widx].codecbuf = &codecbuf[buf_widx]; |
| if (!loadcodec(trackname, start_play)) { |
| close(fd); |
| return false; |
| } |
| tracks[track_widx].filebuf = &codecbuf[buf_widx]; |
| |
| //logf("%s", trackname); |
| logf("Buffering track:%d/%d", track_widx, track_ridx); |
| |
| if (!queue_empty(&audio_queue)) { |
| logf("Interrupted!"); |
| ci.stop_codec = true; |
| close(fd); |
| return false; |
| } |
| |
| /* Load codec specific track tag information. */ |
| switch (tracks[track_widx].codectype) { |
| case AFMT_MPA_L2: |
| case AFMT_MPA_L3: |
| /* Should check the return value. */ |
| mp3info(&tracks[track_widx].id3, trackname, v1first); |
| lseek(fd, 0, SEEK_SET); |
| /* This is too slow to execute on some files. */ |
| get_mp3file_info(fd, &tracks[track_widx].mp3data); |
| if (offset) { |
| lseek(fd, offset, SEEK_SET); |
| tracks[track_widx].id3.offset = offset; |
| mp3_set_elapsed(&tracks[track_widx].id3); |
| tracks[track_widx].filepos = offset; |
| tracks[track_widx].filerem = tracks[track_widx].filesize - offset; |
| ci.curpos = offset; |
| } else { |
| lseek(fd, 0, SEEK_SET); |
| } |
| /* |
| logf("T:%s", tracks[track_widx].id3.title); |
| logf("L:%d", tracks[track_widx].id3.length); |
| logf("O:%d", tracks[track_widx].id3.first_frame_offset); |
| logf("F:%d", tracks[track_widx].id3.frequency); |
| */ |
| tracks[track_widx].taginfo_ready = true; |
| break ; |
| |
| case AFMT_PCM_WAV: |
| /* Use the trackname part of the id3 structure as a temporary buffer */ |
| buf=tracks[track_widx].id3.path; |
| |
| lseek(fd, 0, SEEK_SET); |
| |
| rc = read(fd, buf, 44); |
| if (rc < 44) { |
| close(fd); |
| return false; |
| } |
| |
| if ((memcmp(buf,"RIFF",4)!=0) || |
| (memcmp(&buf[8],"WAVEfmt",7)!=0)) { |
| logf("%s is not a WAV file\n",trackname); |
| close(fd); |
| return(false); |
| } |
| |
| /* FIX: Correctly parse WAV header - we assume canonical |
| 44-byte header */ |
| |
| bitspersample=buf[34]; |
| channels=buf[22]; |
| |
| if ((bitspersample!=16) || (channels != 2)) { |
| logf("Unsupported WAV file - %d bitspersample, %d channels\n", |
| bitspersample,channels); |
| close(fd); |
| return(false); |
| } |
| |
| bytespersample=((bitspersample/8)*channels); |
| numbytes=(buf[40]|(buf[41]<<8)|(buf[42]<<16)|(buf[43]<<24)); |
| totalsamples=numbytes/bytespersample; |
| |
| tracks[track_widx].id3.vbr=false; /* All WAV files are CBR */ |
| tracks[track_widx].id3.filesize=filesize(fd); |
| tracks[track_widx].id3.frequency=buf[24]|(buf[25]<<8)|(buf[26]<<16)|(buf[27]<<24); |
| |
| /* Calculate track length (in ms) and estimate the bitrate (in kbit/s) */ |
| tracks[track_widx].id3.length=(totalsamples/tracks[track_widx].id3.frequency)*1000; |
| tracks[track_widx].id3.bitrate=(tracks[track_widx].id3.frequency*bytespersample)/(1000/8); |
| |
| lseek(fd, 0, SEEK_SET); |
| strncpy(tracks[track_widx].id3.path,trackname,sizeof(tracks[track_widx].id3.path)); |
| tracks[track_widx].taginfo_ready = true; |
| |
| break; |
| |
| |
| case AFMT_FLAC: |
| /* A simple parser to read vital metadata from a FLAC file - length, frequency, bitrate etc. */ |
| /* This code should either be moved to a seperate file, or discarded in favour of the libFLAC code */ |
| /* The FLAC stream specification can be found at http://flac.sourceforge.net/format.html#stream */ |
| |
| /* Use the trackname part of the id3 structure as a temporary buffer */ |
| buf=tracks[track_widx].id3.path; |
| |
| lseek(fd, 0, SEEK_SET); |
| |
| rc = read(fd, buf, 4); |
| if (rc < 4) { |
| close(fd); |
| return false; |
| } |
| |
| if (memcmp(buf,"fLaC",4)!=0) { |
| logf("%s is not a FLAC file\n",trackname); |
| close(fd); |
| return(false); |
| } |
| |
| while (1) { |
| rc = read(fd, buf, 4); |
| i = (buf[1]<<16)|(buf[2]<<8)|buf[3]; /* The length of the block */ |
| |
| if ((buf[0]&0x7f)==0) { /* 0 is the STREAMINFO block */ |
| rc = read(fd, buf, i); /* FIXME: Don't trust the value of i */ |
| if (rc < 0) { |
| close(fd); |
| return false; |
| } |
| tracks[track_widx].id3.vbr=true; /* All FLAC files are VBR */ |
| tracks[track_widx].id3.filesize=filesize(fd); |
| |
| tracks[track_widx].id3.frequency=(buf[10]<<12)|(buf[11]<<4)|((buf[12]&0xf0)>>4); |
| |
| /* NOT NEEDED: bitspersample=(((buf[12]&0x01)<<4)|((buf[13]&0xf0)>>4))+1; */ |
| |
| /* totalsamples is a 36-bit field, but we assume <= 32 bits are used */ |
| totalsamples=(buf[14]<<24)|(buf[15]<<16)|(buf[16]<<8)|buf[17]; |
| |
| /* Calculate track length (in ms) and estimate the bitrate (in kbit/s) */ |
| tracks[track_widx].id3.length=(totalsamples/tracks[track_widx].id3.frequency)*1000; |
| tracks[track_widx].id3.bitrate=(filesize(fd)*8)/tracks[track_widx].id3.length; |
| } else if ((buf[0]&0x7f)==4) { /* 4 is the VORBIS_COMMENT block */ |
| |
| /* The next i bytes of the file contain the VORBIS COMMENTS - just skip them for now. */ |
| lseek(fd, i, SEEK_CUR); |
| |
| } else { |
| if (buf[0]&0x80) { /* If we have reached the last metadata block, abort. */ |
| break; |
| } else { |
| lseek(fd, i, SEEK_CUR); /* Skip to next metadata block */ |
| } |
| } |
| } |
| |
| lseek(fd, 0, SEEK_SET); |
| strncpy(tracks[track_widx].id3.path,trackname,sizeof(tracks[track_widx].id3.path)); |
| tracks[track_widx].taginfo_ready = true; |
| break; |
| |
| case AFMT_OGG_VORBIS: |
| /* A simple parser to read vital metadata from an Ogg Vorbis file */ |
| |
| /* An Ogg File is split into pages, each starting with the string |
| "OggS". Each page has a timestamp (in PCM samples) referred to as |
| the "granule position". |
| |
| An Ogg Vorbis has the following structure: |
| 1) Identification header (containing samplerate, numchannels, etc) |
| 2) Comment header - containing the Vorbis Comments |
| 3) Setup header - containing codec setup information |
| 4) Many audio packets... |
| |
| */ |
| |
| /* Use the trackname part of the id3 structure as a temporary buffer */ |
| buf=tracks[track_widx].id3.path; |
| |
| lseek(fd, 0, SEEK_SET); |
| |
| rc = read(fd, buf, 58); |
| if (rc < 4) { |
| close(fd); |
| return false; |
| } |
| |
| if ((memcmp(buf,"OggS",4)!=0) || (memcmp(&buf[29],"vorbis",6)!=0)) { |
| logf("%s is not an Ogg Vorbis file\n",trackname); |
| close(fd); |
| return(false); |
| } |
| |
| /* Ogg stores integers in little-endian format. */ |
| tracks[track_widx].id3.filesize=filesize(fd); |
| tracks[track_widx].id3.frequency=buf[40]|(buf[41]<<8)|(buf[42]<<16)|(buf[43]<<24); |
| channels=buf[39]; |
| |
| /* We now need to search for the last page in the file - identified by |
| by ('O','g','g','S',0) and retrieve totalsamples */ |
| |
| lseek(fd, -32*1024, SEEK_END); |
| eof=0; |
| j=0; /* The number of bytes currently in buffer */ |
| i=0; |
| totalsamples=0; |
| while (!eof) { |
| rc = read(fd, &buf[j], MAX_PATH-j); |
| if (rc <= 0) { |
| eof=1; |
| } else { |
| j+=rc; |
| } |
| /* Inefficient (but simple) search */ |
| i=0; |
| while (i < (j-5)) { |
| if (memcmp(&buf[i],"OggS",5)==0) { |
| if (i < (j-10)) { |
| totalsamples=(buf[i+6])|(buf[i+7]<<8)|(buf[i+8]<<16)|(buf[i+9]<<24); |
| j=0; /* We can discard the rest of the buffer */ |
| } else { |
| break; |
| } |
| } else { |
| i++; |
| } |
| } |
| if (i < (j-5)) { |
| /* Move OggS to start of buffer */ |
| while(i>0) buf[i--]=buf[j--]; |
| } else { |
| j=0; |
| } |
| } |
| |
| tracks[track_widx].id3.length=(totalsamples/tracks[track_widx].id3.frequency)*1000; |
| |
| /* The following calculation should use datasize, not filesize (i.e. exclude comments etc) */ |
| tracks[track_widx].id3.bitrate=(filesize(fd)*8)/tracks[track_widx].id3.length; |
| tracks[track_widx].id3.vbr=true; |
| |
| lseek(fd, 0, SEEK_SET); |
| strncpy(tracks[track_widx].id3.path,trackname,sizeof(tracks[track_widx].id3.path)); |
| tracks[track_widx].taginfo_ready = true; |
| break; |
| |
| /* If we don't know how to read the metadata, just store the filename */ |
| default: |
| strncpy(tracks[track_widx].id3.path,trackname,sizeof(tracks[track_widx].id3.path)); |
| tracks[track_widx].taginfo_ready = true; |
| break; |
| } |
| |
| track_changed = true; |
| track_count++; |
| i = tracks[track_widx].filepos; |
| while (i < size) { |
| /* Give codecs some processing time to prevent glitches. */ |
| yield_codecs(); |
| |
| /* Limit buffering size at first run. */ |
| if (conf_bufferlimit && (int)fill_bytesleft >= conf_bufferlimit) { |
| fill_bytesleft = conf_bufferlimit; |
| conf_bufferlimit = 0; |
| } |
| |
| if (!queue_empty(&audio_queue)) { |
| logf("Buffering interrupted"); |
| close(fd); |
| return false; |
| } |
| |
| if (fill_bytesleft == 0) |
| break ; |
| |
| copy_n = MIN(conf_filechunk, codecbuflen - buf_widx); |
| copy_n = MIN(size - i, copy_n); |
| copy_n = MIN((int)fill_bytesleft, copy_n); |
| rc = read(fd, &codecbuf[buf_widx], copy_n); |
| if (rc < 0) { |
| logf("File error!"); |
| close(fd); |
| return false; |
| } |
| buf_widx += rc; |
| if (buf_widx >= codecbuflen) |
| buf_widx -= codecbuflen; |
| i += rc; |
| tracks[track_widx].available += rc; |
| tracks[track_widx].filerem -= rc; |
| codecbufused += rc; |
| fill_bytesleft -= rc; |
| } |
| |
| tracks[track_widx].filepos = i; |
| |
| /* Leave the file handle open for faster buffer refill. */ |
| if (tracks[track_widx].filerem != 0) { |
| current_fd = fd; |
| logf("Partially buf:%d", tracks[track_widx].available); |
| return false; |
| } else { |
| logf("Completely buf."); |
| close(fd); |
| current_fd = -1; |
| if (++track_widx >= MAX_TRACK) { |
| track_widx = 0; |
| } |
| tracks[track_widx].filerem = 0; |
| } |
| |
| return true; |
| } |
| |
| void audio_insert_tracks(int offset, bool start_playing, int peek_offset) |
| { |
| fill_bytesleft = codecbuflen - codecbufused; |
| filling = true; |
| while (audio_load_track(offset, start_playing, peek_offset)) { |
| start_playing = false; |
| offset = 0; |
| peek_offset++; |
| } |
| filling = false; |
| } |
| |
| void audio_play_start(int offset) |
| { |
| memset(&tracks, 0, sizeof(struct track_info) * MAX_TRACK); |
| sound_set(SOUND_VOLUME, global_settings.volume); |
| track_count = 0; |
| track_widx = 0; |
| track_ridx = 0; |
| buf_ridx = 0; |
| buf_widx = 0; |
| codecbufused = 0; |
| #ifndef SIMULATOR |
| pcm_set_boost_mode(true); |
| #endif |
| audio_insert_tracks(offset, true, 0); |
| #ifndef SIMULATOR |
| pcm_set_boost_mode(false); |
| ata_sleep(); |
| #endif |
| } |
| |
| void audio_check_buffer(void) |
| { |
| int i; |
| int cur_idx; |
| |
| /* Fill buffer as full as possible for cross-fader. */ |
| #ifndef SIMULATOR |
| if (pcm_is_crossfade_enabled() && cur_ti->id3.length > 0 |
| && cur_ti->id3.length - cur_ti->id3.elapsed < 20000 && playing) |
| pcm_set_boost_mode(true); |
| #endif |
| |
| /* Start buffer filling as necessary. */ |
| if (codecbufused > conf_watermark || !queue_empty(&audio_queue) |
| || !playing || ci.stop_codec || ci.reload_codec) |
| return ; |
| |
| filling = true; |
| #ifndef SIMULATOR |
| pcm_set_boost_mode(true); |
| #endif |
| |
| fill_bytesleft = codecbuflen - codecbufused; |
| |
| /* Calculate real track count after throwing away old tracks. */ |
| cur_idx = track_ridx; |
| for (i = 0; i < track_count; i++) { |
| if (cur_idx == track_widx) |
| break ; |
| |
| if (++cur_idx >= MAX_TRACK) |
| cur_idx = 0; |
| } |
| |
| track_count = i; |
| if (tracks[cur_idx].filerem != 0) |
| track_count++; |
| |
| /* Mark all other entries null. */ |
| cur_idx = track_widx; |
| for (i = 0; i < MAX_TRACK - track_count; i++) { |
| if (++cur_idx >= MAX_TRACK) |
| cur_idx = 0; |
| tracks[cur_idx].filesize = 0; |
| tracks[cur_idx].available = 0; |
| } |
| |
| /* Try to load remainings of the file. */ |
| if (tracks[track_widx].filerem > 0) |
| audio_fill_file_buffer(); |
| |
| /* Load new files to fill the entire buffer. */ |
| if (tracks[track_widx].filerem == 0) |
| audio_insert_tracks(0, false, 1); |
| |
| #ifndef SIMULATOR |
| pcm_set_boost_mode(false); |
| if (playing) |
| ata_sleep(); |
| #endif |
| filling = false; |
| } |
| |
| void audio_update_trackinfo(void) |
| { |
| if (new_track >= 0) { |
| buf_ridx += cur_ti->available; |
| codecbufused -= cur_ti->available; |
| |
| cur_ti = &tracks[track_ridx]; |
| buf_ridx += cur_ti->codecsize; |
| codecbufused -= cur_ti->codecsize; |
| if (buf_ridx >= codecbuflen) |
| buf_ridx -= codecbuflen; |
| #ifndef SIMULATOR |
| pcm_crossfade_start(); |
| if (!filling) |
| pcm_set_boost_mode(false); |
| #endif |
| } else { |
| buf_ridx -= ci.curpos + cur_ti->codecsize; |
| codecbufused += ci.curpos + cur_ti->codecsize; |
| cur_ti->available = cur_ti->filesize; |
| |
| cur_ti = &tracks[track_ridx]; |
| buf_ridx -= cur_ti->filesize; |
| codecbufused += cur_ti->filesize; |
| cur_ti->available = cur_ti->filesize; |
| if (buf_ridx < 0) |
| buf_ridx = codecbuflen + buf_ridx; |
| } |
| |
| ci.filesize = cur_ti->filesize; |
| cur_ti->id3.elapsed = 0; |
| cur_ti->id3.offset = 0; |
| ci.id3 = (struct mp3entry *)&cur_ti->id3; |
| ci.mp3data = (struct mp3info *)&cur_ti->mp3data; |
| ci.curpos = 0; |
| ci.taginfo_ready = (bool *)&cur_ti->taginfo_ready; |
| track_changed = true; |
| } |
| |
| void audio_change_track(void) |
| { |
| if (track_ridx == track_widx) { |
| logf("No more tracks"); |
| playing = false; |
| return ; |
| } |
| |
| if (++track_ridx >= MAX_TRACK) |
| track_ridx = 0; |
| |
| audio_update_trackinfo(); |
| queue_post(&codec_queue, CODEC_LOAD, 0); |
| } |
| |
| bool codec_request_next_track_callback(void) |
| { |
| if (ci.stop_codec || !playing || !queue_empty(&audio_queue)) |
| return false; |
| |
| logf("Request new track"); |
| |
| /* Advance to next track. */ |
| if (ci.reload_codec && new_track > 0) { |
| playlist_next(1); |
| if (++track_ridx == MAX_TRACK) |
| track_ridx = 0; |
| if (tracks[track_ridx].filesize == 0) { |
| logf("Loading from disk..."); |
| new_track = 0; |
| queue_post(&audio_queue, AUDIO_PLAY, 0); |
| return false; |
| } |
| } |
| |
| /* Advance to previous track. */ |
| else if (ci.reload_codec && new_track < 0) { |
| playlist_next(-1); |
| if (--track_ridx < 0) |
| track_ridx = MAX_TRACK-1; |
| if (tracks[track_ridx].filesize == 0 || |
| codecbufused+ci.curpos+tracks[track_ridx].filesize |
| /*+ (off_t)tracks[track_ridx].codecsize*/ > codecbuflen) { |
| logf("Loading from disk..."); |
| new_track = 0; |
| queue_post(&audio_queue, AUDIO_PLAY, 0); |
| return false; |
| } |
| } |
| |
| /* Codec requested track change (next track). */ |
| else { |
| playlist_next(1); |
| if (++track_ridx >= MAX_TRACK) |
| track_ridx = 0; |
| |
| if (track_ridx == track_widx && tracks[track_ridx].filerem == 0) { |
| if (ci.reload_codec) { |
| } else { |
| logf("No more tracks"); |
| } |
| new_track = 0; |
| return false; |
| } |
| } |
| |
| ci.reload_codec = false; |
| |
| if (cur_ti->codectype != tracks[track_ridx].codectype) { |
| if (--track_ridx < 0) |
| track_ridx = MAX_TRACK-1; |
| logf("New codec"); |
| new_track = 0; |
| return false; |
| } |
| |
| logf("On-the-fly change"); |
| audio_update_trackinfo(); |
| new_track = 0; |
| |
| return true; |
| } |
| |
| void audio_thread(void) |
| { |
| struct event ev; |
| |
| while (1) { |
| sleep(50); |
| audio_check_buffer(); |
| |
| queue_wait_w_tmo(&audio_queue, &ev, 10); |
| switch (ev.id) { |
| case AUDIO_PLAY: |
| ci.stop_codec = true; |
| ci.reload_codec = false; |
| ci.seek_time = 0; |
| #ifndef SIMULATOR |
| pcm_play_stop(); |
| #endif |
| audio_play_start((int)ev.data); |
| break ; |
| |
| case AUDIO_STOP: |
| paused = false; |
| #ifndef SIMULATOR |
| pcm_play_stop(); |
| pcm_play_pause(true); |
| #endif |
| break ; |
| |
| case AUDIO_PAUSE: |
| break ; |
| |
| case AUDIO_RESUME: |
| break ; |
| |
| case AUDIO_NEXT: |
| break ; |
| |
| case AUDIO_CODEC_DONE: |
| //if (playing) |
| // audio_change_track(); |
| break ; |
| |
| #ifndef SIMULATOR |
| case SYS_USB_CONNECTED: |
| playing = false; |
| ci.stop_codec = true; |
| logf("USB Connection"); |
| pcm_play_stop(); |
| pcm_play_pause(true); |
| usb_acknowledge(SYS_USB_CONNECTED_ACK); |
| usb_wait_for_disconnect(&audio_queue); |
| break ; |
| #endif |
| } |
| } |
| } |
| |
| void codec_thread(void) |
| { |
| struct event ev; |
| size_t codecsize; |
| int status; |
| int wrap; |
| |
| while (1) { |
| status = 0; |
| queue_wait(&codec_queue, &ev); |
| switch (ev.id) { |
| case CODEC_LOAD_DISK: |
| ci.stop_codec = false; |
| status = codec_load_file((char *)ev.data, &ci); |
| break ; |
| |
| case CODEC_LOAD: |
| logf("Codec start"); |
| codecsize = cur_ti->codecsize; |
| if (codecsize == 0) { |
| logf("Codec slot is empty!"); |
| playing = false; |
| break ; |
| } |
| |
| ci.stop_codec = false; |
| wrap = (int)&codecbuf[codecbuflen] - (int)cur_ti->codecbuf; |
| status = codec_load_ram(cur_ti->codecbuf, codecsize, |
| &ci, &codecbuf[0], codecbuflen); |
| break ; |
| |
| #ifndef SIMULATOR |
| case SYS_USB_CONNECTED: |
| usb_acknowledge(SYS_USB_CONNECTED_ACK); |
| usb_wait_for_disconnect(&codec_queue); |
| break ; |
| #endif |
| } |
| |
| switch (ev.id) { |
| case CODEC_LOAD_DISK: |
| case CODEC_LOAD: |
| if (status != PLUGIN_OK) { |
| logf("Codec failure"); |
| // playing = false; |
| } else { |
| logf("Codec finished"); |
| } |
| |
| if (playing && !ci.stop_codec && !ci.reload_codec) { |
| audio_change_track(); |
| continue ; |
| } else if (ci.stop_codec) { |
| //playing = false; |
| } |
| //queue_post(&audio_queue, AUDIO_CODEC_DONE, (void *)status); |
| } |
| } |
| } |
| |
| struct mp3entry* audio_current_track(void) |
| { |
| logf("audio_current_track"); |
| |
| if (track_count > 0 && cur_ti->taginfo_ready) |
| return (struct mp3entry *)&cur_ti->id3; |
| else |
| return NULL; |
| } |
| |
| struct mp3entry* audio_next_track(void) |
| { |
| int next_idx = track_ridx + 1; |
| |
| if (track_count == 0) |
| return NULL; |
| |
| if (next_idx >= MAX_TRACK) |
| next_idx = 0; |
| |
| if (!tracks[next_idx].taginfo_ready) |
| return NULL; |
| |
| //logf("audio_next_track"); |
| |
| return &tracks[next_idx].id3; |
| } |
| |
| bool audio_has_changed_track(void) |
| { |
| if (track_changed && track_count > 0) { |
| if (!cur_ti->taginfo_ready) |
| return false; |
| track_changed = false; |
| return true; |
| } |
| |
| return false; |
| } |
| |
| void audio_play(int offset) |
| { |
| logf("audio_play"); |
| ci.stop_codec = true; |
| #ifndef SIMULATOR |
| pcm_play_pause(true); |
| #endif |
| paused = false; |
| playing = true; |
| queue_post(&audio_queue, AUDIO_PLAY, (void *)offset); |
| } |
| |
| void audio_stop(void) |
| { |
| logf("audio_stop"); |
| playing = false; |
| paused = false; |
| ci.stop_codec = true; |
| if (current_fd >= 0) { |
| close(current_fd); |
| current_fd = -1; |
| } |
| queue_post(&audio_queue, AUDIO_STOP, 0); |
| #ifndef SIMULATOR |
| pcm_play_pause(true); |
| #endif |
| } |
| |
| void audio_pause(void) |
| { |
| logf("audio_pause"); |
| #ifndef SIMULATOR |
| pcm_play_pause(false); |
| #endif |
| paused = true; |
| //queue_post(&audio_queue, AUDIO_PAUSE, 0); |
| } |
| |
| void audio_resume(void) |
| { |
| logf("audio_resume"); |
| #ifndef SIMULATOR |
| pcm_play_pause(true); |
| #endif |
| paused = false; |
| //queue_post(&audio_queue, AUDIO_RESUME, 0); |
| } |
| |
| void audio_next(void) |
| { |
| logf("audio_next"); |
| new_track = 1; |
| ci.reload_codec = true; |
| |
| /* Detect if disk is spinning.. */ |
| if (filling) { |
| ci.stop_codec = true; |
| playlist_next(1); |
| queue_post(&audio_queue, AUDIO_PLAY, 0); |
| } else { |
| #ifndef SIMULATOR |
| pcm_play_stop(); |
| #endif |
| } |
| } |
| |
| void audio_prev(void) |
| { |
| logf("audio_prev"); |
| new_track = -1; |
| ci.reload_codec = true; |
| #ifndef SIMULATOR |
| pcm_play_stop(); |
| #endif |
| |
| if (filling) { |
| ci.stop_codec = true; |
| playlist_next(-1); |
| queue_post(&audio_queue, AUDIO_PLAY, 0); |
| } |
| //queue_post(&audio_queue, AUDIO_PREV, 0); |
| } |
| |
| void audio_ff_rewind(int newpos) |
| { |
| logf("rewind: %d", newpos); |
| /* Does not work yet. */ |
| if (playing) |
| ci.seek_time = newpos+1; |
| } |
| |
| void audio_flush_and_reload_tracks(void) |
| { |
| logf("flush & reload"); |
| } |
| |
| void audio_error_clear(void) |
| { |
| } |
| |
| int audio_status(void) |
| { |
| int ret = 0; |
| |
| if (playing) |
| ret |= AUDIO_STATUS_PLAY; |
| |
| if (paused) |
| ret |= AUDIO_STATUS_PAUSE; |
| |
| return ret; |
| } |
| |
| int audio_get_file_pos(void) |
| { |
| return 0; |
| } |
| |
| |
| /* Copied from mpeg.c. Should be moved somewhere else. */ |
| static void mp3_set_elapsed(struct mp3entry* id3) |
| { |
| if ( id3->vbr ) { |
| if ( id3->has_toc ) { |
| /* calculate elapsed time using TOC */ |
| int i; |
| unsigned int remainder, plen, relpos, nextpos; |
| |
| /* find wich percent we're at */ |
| for (i=0; i<100; i++ ) |
| { |
| if ( id3->offset < (int)(id3->toc[i] * (id3->filesize / 256)) ) |
| { |
| break; |
| } |
| } |
| |
| i--; |
| if (i < 0) |
| i = 0; |
| |
| relpos = id3->toc[i]; |
| |
| if (i < 99) |
| { |
| nextpos = id3->toc[i+1]; |
| } |
| else |
| { |
| nextpos = 256; |
| } |
| |
| remainder = id3->offset - (relpos * (id3->filesize / 256)); |
| |
| /* set time for this percent (divide before multiply to prevent |
| overflow on long files. loss of precision is negligible on |
| short files) */ |
| id3->elapsed = i * (id3->length / 100); |
| |
| /* calculate remainder time */ |
| plen = (nextpos - relpos) * (id3->filesize / 256); |
| id3->elapsed += (((remainder * 100) / plen) * |
| (id3->length / 10000)); |
| } |
| else { |
| /* no TOC exists. set a rough estimate using average bitrate */ |
| int tpk = id3->length / (id3->filesize / 1024); |
| id3->elapsed = id3->offset / 1024 * tpk; |
| } |
| } |
| else |
| /* constant bitrate == simple frame calculation */ |
| id3->elapsed = id3->offset / id3->bpf * id3->tpf; |
| } |
| |
| /* Copied from mpeg.c. Should be moved somewhere else. */ |
| int mp3_get_file_pos(void) |
| { |
| int pos = -1; |
| struct mp3entry *id3 = audio_current_track(); |
| |
| if (id3->vbr) |
| { |
| if (id3->has_toc) |
| { |
| /* Use the TOC to find the new position */ |
| unsigned int percent, remainder; |
| int curtoc, nexttoc, plen; |
| |
| percent = (id3->elapsed*100)/id3->length; |
| if (percent > 99) |
| percent = 99; |
| |
| curtoc = id3->toc[percent]; |
| |
| if (percent < 99) |
| nexttoc = id3->toc[percent+1]; |
| else |
| nexttoc = 256; |
| |
| pos = (id3->filesize/256)*curtoc; |
| |
| /* Use the remainder to get a more accurate position */ |
| remainder = (id3->elapsed*100)%id3->length; |
| remainder = (remainder*100)/id3->length; |
| plen = (nexttoc - curtoc)*(id3->filesize/256); |
| pos += (plen/100)*remainder; |
| } |
| else |
| { |
| /* No TOC exists, estimate the new position */ |
| pos = (id3->filesize / (id3->length / 1000)) * |
| (id3->elapsed / 1000); |
| } |
| } |
| else if (id3->bpf && id3->tpf) |
| pos = (id3->elapsed/id3->tpf)*id3->bpf; |
| else |
| { |
| return -1; |
| } |
| |
| if (pos >= (int)(id3->filesize - id3->id3v1len)) |
| { |
| /* Don't seek right to the end of the file so that we can |
| transition properly to the next song */ |
| pos = id3->filesize - id3->id3v1len - 1; |
| } |
| else if (pos < (int)id3->first_frame_offset) |
| { |
| /* skip past id3v2 tag and other leading garbage */ |
| pos = id3->first_frame_offset; |
| } |
| return pos; |
| } |
| |
| #ifndef SIMULATOR |
| void audio_set_buffer_margin(int seconds) |
| { |
| (void)seconds; |
| } |
| #endif |
| |
| void mpeg_id3_options(bool _v1first) |
| { |
| v1first = _v1first; |
| } |
| |
| void audio_init(void) |
| { |
| logf("audio api init"); |
| codecbuflen = audiobufend - audiobuf - PCMBUF_SIZE |
| - MALLOC_BUFSIZE - GUARD_BUFSIZE; |
| //codecbuflen = 2*512*1024; |
| codecbufused = 0; |
| filling = false; |
| codecbuf = &audiobuf[MALLOC_BUFSIZE]; |
| playing = false; |
| paused = false; |
| track_changed = false; |
| current_fd = -1; |
| |
| logf("abuf:%0x", PCMBUF_SIZE); |
| logf("fbuf:%0x", codecbuflen); |
| logf("mbuf:%0x", MALLOC_BUFSIZE); |
| |
| /* Initialize codec api. */ |
| ci.read_filebuf = codec_filebuf_callback; |
| #ifndef SIMULATOR |
| ci.audiobuffer_insert = audiobuffer_insert; |
| #else |
| ci.audiobuffer_insert = audiobuffer_insert_sim; |
| #endif |
| ci.get_codec_memory = get_codec_memory_callback; |
| ci.request_buffer = codec_request_buffer_callback; |
| ci.advance_buffer = codec_advance_buffer_callback; |
| ci.advance_buffer_loc = codec_advance_buffer_loc_callback; |
| ci.request_next_track = codec_request_next_track_callback; |
| ci.mp3_get_filepos = codec_mp3_get_filepos_callback; |
| ci.seek_buffer = codec_seek_buffer_callback; |
| ci.set_elapsed = codec_set_elapsed_callback; |
| ci.configure = codec_configure_callback; |
| |
| queue_init(&audio_queue); |
| queue_init(&codec_queue); |
| |
| create_thread(codec_thread, codec_stack, sizeof(codec_stack), |
| codec_thread_name); |
| create_thread(audio_thread, audio_stack, sizeof(audio_stack), |
| audio_thread_name); |
| #ifndef SIMULATOR |
| audio_is_initialized = true; |
| #endif |
| } |
| |
| |